Abstract: In one embodiment of the present invention, a weight vector is generated based on a pre-distorted input signal and an output signal of an amplifier using a computation reduction technique. The computation reduction technique decomposes a number of multiplication operations between complex numbers such that a number of multiplications and a number of additions to generate the weight vector is reduced as compared to if the number of multiplication operations between complex numbers was not decomposed. An input signal for input to an amplifier is pre-distorted based on the generated weight vector.

Abstract: In one embodiment of the present invention, a weight vector is generated based on a pre-distorted input signal and an output signal of an amplifier using a computation reduction technique. The computation reduction technique decomposes a number of multiplication operations between complex numbers such that a number of multiplications and a number of additions to generate the weight vector is reduced as compared to if the number of multiplication operations between complex numbers was not decomposed. An input signal for input to an amplifier is pre-distorted based on the generated weight vector.

Abstract: A system and method for data collision resolution wherein the same back-off window is sent to a plurality of remote users and is recalculated to maintain a constant collision rate and thereby increase throughput. The collision rate of the network is estimated in the present invention by detecting collisions in reservation slots and the size of the back-off window is adjusted to maintain a collision rate of approximately 1?2/e.

Abstract: A system and method for data collision resolution wherein the same back-off window is sent to a plurality of remote users and is recalculated to maintain a constant collision rate and thereby increase throughput. The collision rate of the network is estimated in the present invention by detecting collisions in reservation slots and the size of the back-off window is adjusted to maintain a collision rate of approximately 1−2/e.

Abstract: The presence of a supervisory audio tone signal (SAT), superimposed on a voice/data signal transmitted in a cellular telephone system, is carried out by first deleting the voice/data signal, leaving only the SAT signal. Thereafter, the SAT signal power and noise power are determined. During intervals when the SAT signal rises and falls, the SAT noise power and signal power move in opposite directions when the radio carrier turns on and off, respectively. By comparing the SAT noise power to the SAT signal power, a fast, accurate determination can be made as to whether the SAT signal is present. Moreover, the ratio of the SAT signal power to SAT noise power provides a good estimate of the quality of the channel in the cellular telephone system. By repeatedly computing the SAT signal power to noise power ratio, a base station (48) in the cellular telephone system can decide when to hand off, and to which other base station such hand-off should be made.

Abstract: A method is disclosed for executing handovers in a cellular network, based upon channel quality measurements. For AMPS service, the method involves the monitoring of a supervisory audio tone (SAT) signal which is superimposed on the voice signal that is transmitted between base stations and mobile terminals traveling within a cellular network, and handovers are executed in dependence upon noise power measurements associated therewith. For TDMA service, the method involves the monitoring of a raw data signal associated with digital transmissions, and handovers are executed in dependence upon noise power measurements associated therewith.